帮我写一个stm32 使用PT100测温，使用查表法的程序

好的，以下是一个使用STM32和PT100传感器测温的程序，使用查表法计算温度：

#include "stm32f4xx.h"
#include <math.h>

#define TABLE_SIZE  100
#define VREF        3.3
#define R_REF       100.0
#define R0          100.0
#define A           3.9083e-3
#define B          -5.775e-7

float temperature_table[TABLE_SIZE] = {-200, -195, -190, /* ... */ , 995, 1000}; // 温度表格

void delay(uint32_t time)
{
    while(time--);
}

int get_adc_value(void)
{
    ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_480Cycles);
    ADC_SoftwareStartConv(ADC1);
    while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
    return ADC_GetConversionValue(ADC1);
}

float get_resistance(int adc_value)
{
    float v = adc_value * VREF / 4096.0;
    return (v * R_REF) / (3.3 - v);
}

float get_temperature(float resistance)
{
    float t = 0.0;
    float r = resistance / R0;
    t = (-A + sqrtf(A * A - 4 * B * (1 - r))) / (2 * B);
    return t;
}

float lookup_temperature(float resistance)
{
    int i = 0;
    for(i = 0; i < TABLE_SIZE; i++)
    {
        if(resistance > resistance_table[i])
        {
            break;
        }
    }
    return temperature_table[i];
}

int main(void)
{
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    
    ADC_InitTypeDef ADC_InitStructure;
    ADC_CommonInitTypeDef ADC_CommonInitStructure;
    
    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
    ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
    ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_20Cycles;
    ADC_CommonInit(&ADC_CommonInitStructure);
    
    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 1;
    ADC_Init(ADC1, &ADC_InitStructure);
    
    ADC_Cmd(ADC1, ENABLE);
    
    while(1)
    {
        int adc_value = get_adc_value();
        float resistance = get_resistance(adc_value);
        float temperature = lookup_temperature(resistance);
        // do something with temperature
        delay(1000);
    }
}

这个程序使用了STM32的ADC模块来读取PT100传感器的电阻值，并使用查表法将电阻值转换为温度。注意，在程序中需要设置正确的ADC通道和引脚配置，以及正确的温度表格。